From: Dave Chinner <david@fromorbit.com>
To: xfs@oss.sgi.com
Subject: [PATCH 13/18] xfs: remove buftarg hash for external devices
Date: Tue, 14 Sep 2010 20:56:12 +1000 [thread overview]
Message-ID: <1284461777-1496-14-git-send-email-david@fromorbit.com> (raw)
In-Reply-To: <1284461777-1496-1-git-send-email-david@fromorbit.com>
From: Dave Chinner <dchinner@redhat.com>
For RT and external log devices, we never use hashed buffers on them
now. Remove the buftarg hash tables that are set up for them.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/xfs/linux-2.6/xfs_buf.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 304515b..1c6206e 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -1456,7 +1456,11 @@ xfs_alloc_bufhash(
{
unsigned int i;
- btp->bt_hashshift = external ? 3 : 12; /* 8 or 4096 buckets */
+ if (external) {
+ btp->bt_hash = NULL;
+ return;
+ }
+ btp->bt_hashshift = 12; /* 4096 buckets */
btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) *
sizeof(xfs_bufhash_t));
for (i = 0; i < (1 << btp->bt_hashshift); i++) {
--
1.7.1
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next prev parent reply other threads:[~2010-09-14 10:56 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-14 10:55 [PATCH 0/18] xfs: metadata and buffer cache scalability improvements Dave Chinner
2010-09-14 10:56 ` [PATCH 01/18] xfs: single thread inode cache shrinking Dave Chinner
2010-09-14 18:48 ` Alex Elder
2010-09-14 22:48 ` Dave Chinner
2010-09-14 10:56 ` [PATCH 02/18] xfs: reduce the number of CIL lock round trips during commit Dave Chinner
2010-09-14 14:48 ` Christoph Hellwig
2010-09-14 17:21 ` Alex Elder
2010-09-14 10:56 ` [PATCH 03/18] xfs: remove debug assert for per-ag reference counting Dave Chinner
2010-09-14 14:48 ` Christoph Hellwig
2010-09-14 17:22 ` Alex Elder
2010-09-14 10:56 ` [PATCH 04/18] xfs: lockless per-ag lookups Dave Chinner
2010-09-14 12:35 ` Dave Chinner
2010-09-14 14:50 ` Christoph Hellwig
2010-09-14 17:28 ` Alex Elder
2010-09-14 10:56 ` [PATCH 05/18] xfs: convert inode cache lookups to use RCU locking Dave Chinner
2010-09-14 16:27 ` Christoph Hellwig
2010-09-14 23:17 ` Dave Chinner
2010-09-14 21:23 ` Alex Elder
2010-09-14 23:42 ` Dave Chinner
2010-09-14 10:56 ` [PATCH 06/18] xfs: convert pag_ici_lock to a spin lock Dave Chinner
2010-09-14 21:26 ` Alex Elder
2010-09-14 10:56 ` [PATCH 07/18] xfs: don't use vfs writeback for pure metadata modifications Dave Chinner
2010-09-14 14:54 ` Christoph Hellwig
2010-09-15 0:14 ` Dave Chinner
2010-09-15 0:17 ` Christoph Hellwig
2010-09-14 22:12 ` Alex Elder
2010-09-15 0:28 ` Dave Chinner
2010-11-08 10:47 ` Christoph Hellwig
2010-09-14 10:56 ` [PATCH 08/18] xfs: rename xfs_buf_get_nodaddr to be more appropriate Dave Chinner
2010-09-14 14:56 ` Christoph Hellwig
2010-09-14 22:14 ` Alex Elder
2010-09-14 10:56 ` [PATCH 09/18] xfs: introduced uncached buffer read primitve Dave Chinner
2010-09-14 14:56 ` Christoph Hellwig
2010-09-14 22:16 ` Alex Elder
2010-09-14 10:56 ` [PATCH 10/18] xfs: store xfs_mount in the buftarg instead of in the xfs_buf Dave Chinner
2010-09-14 14:57 ` Christoph Hellwig
2010-09-14 22:21 ` Alex Elder
2010-09-14 10:56 ` [PATCH 11/18] xfs: kill XBF_FS_MANAGED buffers Dave Chinner
2010-09-14 14:59 ` Christoph Hellwig
2010-09-14 22:26 ` Alex Elder
2010-09-14 10:56 ` [PATCH 12/18] xfs: use unhashed buffers for size checks Dave Chinner
2010-09-14 15:00 ` Christoph Hellwig
2010-09-14 22:29 ` Alex Elder
2010-09-14 10:56 ` Dave Chinner [this message]
2010-09-14 22:29 ` [PATCH 13/18] xfs: remove buftarg hash for external devices Alex Elder
2010-09-14 10:56 ` [PATCH 14/18] xfs: convert buffer cache hash to rbtree Dave Chinner
2010-09-14 16:29 ` Christoph Hellwig
2010-09-15 17:46 ` Alex Elder
2010-09-14 10:56 ` [PATCH 15/18] xfs; pack xfs_buf structure more tightly Dave Chinner
2010-09-14 16:30 ` Christoph Hellwig
2010-09-15 18:01 ` Alex Elder
2010-09-14 10:56 ` [PATCH 16/18] xfs: convert xfsbud shrinker to a per-buftarg shrinker Dave Chinner
2010-09-14 16:32 ` Christoph Hellwig
2010-09-15 20:19 ` Alex Elder
2010-09-16 0:28 ` Dave Chinner
2010-09-14 10:56 ` [PATCH 17/18] xfs: add a lru to the XFS buffer cache Dave Chinner
2010-09-14 23:16 ` Christoph Hellwig
2010-09-15 0:05 ` Dave Chinner
2010-09-15 21:28 ` Alex Elder
2010-09-14 10:56 ` [PATCH 18/18] xfs: stop using the page cache to back the " Dave Chinner
2010-09-14 23:20 ` Christoph Hellwig
2010-09-15 0:06 ` Dave Chinner
2010-09-14 14:25 ` [PATCH 0/18] xfs: metadata and buffer cache scalability improvements Christoph Hellwig
2010-09-17 13:21 ` Alex Elder
2010-09-21 2:02 ` Dave Chinner
2010-09-21 16:23 ` Alex Elder
2010-09-21 22:34 ` Dave Chinner
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